Table 4 Clinical and Demographic data in IZCG vs. EXG

Categorical characteristic

N (%)

N (%)

χ²

p-value

Sex

.582

.446*

 Male

4 (25%)

6 (37.5%)

 Female

12 (75%)

10 (62.5%)

Number of de-bonded CMAs

-

.838**

 0

11 (68.8%)

13 (81.3%)

 1

3 (18.8%)

1 (6.3%)

 2

2 (12.5%)

2 (12.5%)

Failure of anchorage device

-

1.000***

 0 (no failure)

13 (81.3%)

14 (87.5%)

 1 (failure once)

3 (18.8%)

2 (12.5%)

Numerical characteristic

Mean ± SD

Mean ± SD

t [30]

p-value

Age (years)

14.5 ± 1.4

13.8 ± 1.1

-1.563

.129^$

Treatment duration (months)

6.3 ± 2.1

5.9 ± 2.8

-0.463

.647^$